Pneumatic control for decentralised automation of ELEMENT process valves

Type 8690 / Ident No. 265159

The depiction of the products may differ from the actual specific design.

Feedback top actuator 210X

Compact design

Integrated pilot valve with manual override

Integrated control air routing in the actuator

Visual position indicator

With ATEX II cat. 3G/D and cat. 2D/G approval

For selecting the correct product please refer to the technical data, images and notes for proper use according to the data sheet.

Product description

The pneumatic control unit Type 8690 is designed for decentralised automation of ELEMENT Type 21xx pneumatic process valves. Mechanical or inductive limit switches register the valve position. The integrated pilot valve controls single or double-acting actuators. The design of the control unit and the actuator enables an internal control air routing without external tubings. Besides the electrical position feedback, the status of the device is shown directly on the pneumatic control unit itself. The housing is easy to clean and features proven IP protection and chemically resistant materials for use in hygienic processing, in food, beverage and pharmaceutical industries. Focused on wash down applications, the IP protection of the housing is supported by a positive pressure inside the control head. Combined with Bürkert ELEMENT actuators, the pneumatic actuating system enables spring chamber aeration that avoids actuator chamber contamination from the environment.